Use this URL to access the API, your traffic will be recorded and compared to the documentation. You can review your API traffic in the inspector or directly here in the documentation, right next to each resource.

fanart.tv

v3 of the fanart.tv API

Image Preview

If you want to get a smaller preview of an image simply replace fanart with preview in the assets link

api_key and client_key

Both the api_key and the client_key can either be sent as a url variable, or as a customer header, the only difference is if you are sending it as a header, api_key becomes api-key and client_key becomes client-key